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YouTubeEducational Videos
Preparation of Hydrogen Sulphide
Preparation of Hydrogen Sulphide Hydrogen sulfide is a foul-smelling, highly toxic gas. It is a combination of sulfur and hydrogen with the chemical formula H2S. Hydrogen sulfide has a typical smell of rotten eggs, resulting from the degradation of proteins caused by bacteria by decomposition of sulfur. Hydrogen sulfide is flammable, colorless ...
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Gold is the most expensive it's ever been. On September 2, 2025, the price of the precious metal hit $3,508.50 per ounce. It's reached record highs several times this year. The high price is pushing more people to invest in it — buying gold from Costco, selling gold jewelry, and extracting gold from electronic waste. But this modern-day gold rush is also leading to consequences in Africa's gold-rich nations. In Liberia, foreign mining companies have moved in to extract the resource to meet the g
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